Stack Five

Stack5 is a standard buffer overflow, this time introducing shellcode.

This level is at /opt/protostar/bin/stack5


  • At this point in time, it might be easier to use someone elses shellcode
  • If debugging the shellcode, use \xcc (int3) to stop the program executing and return to the debugger
  • remove the int3s once your shellcode is done.

Source code

#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>

int main(int argc, char **argv)
  char buffer[64];